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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST25TB02K датащи(PDF) 31 Page - STMicroelectronics |
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ST25TB02K датащи(HTML) 31 Page - STMicroelectronics |
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31 / 47 page  8.9 Get_UID() command Command code = 0Bh On receiving the Get_UID command, the ST25TB02K returns its 8 UID bytes. UID bytes are transmitted with the least significant byte first, and each byte is transmitted with the least significant bit first. The ST25TB02K must have received a Select() command and be switched to Selected state before any Get_UID() command can be accepted. All Get_UID() commands sent to the ST25TB02K before a Select() command is issued, are ignored. Figure 42. Get_UID request format SOF CRCL EOF 8 bits 8 bits CRCH Get_IUD 0Bh Request parameter: • No parameter Figure 43. Get_UID response format SOF UID 4 CRCL EOF 8 bits 8 bits 8 bits CRCH 8 bits 8 bits 8 bits UID 5 UID 6 UID 7 UID 0 UID 3 8 bits 8 bits 8 bits UID 1 UID 2 8 bits Response parameters: • UID 0: Less significant UID byte • UID 1 to UID 6: UID bytes • UID 7: Most significant UID byte. Unique identifier (UID) Members of the ST25TB02K family are uniquely identified by a 64-bit unique identifier (UID). This is used for addressing each ST25TB02K device uniquely after the anticollision loop. The UID complies with ISO/IEC 15963 and ISO/IEC 7816-6. It is a read-only code, and comprises (as summarized in Figure 44. 64-bit unique identifier of the ST25TB02K): • an 8-bit prefix, with the most significant bits set to D0h • an 8-bit IC manufacturer code (ISO/IEC 7816-6/AM1) set to 02h (for STMicroelectronics) • a 8-bit product ref code set to 3Fh for ST25TB02K • a 40-bit unique serial number ST25TB02K Get_UID() command DS11469 - Rev 7 page 31/47 |
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